Answer:
9 : D bc there are 6 cubes / squares then times tht by 3.3 cuz ur doin area.
8 : A
Step-by-step explanation:
62.83
because you take 20, divide it by 2 to get the radius then you have the equation 2π(10)
x(x-1)(x+1)(x²+1)=0
Hope it helps you